Thanks for the feedback! I took your advice and redid the face a little, adding more detail to it. I was initially going for a blacked out face due to the way the light was shining from behind, but after adding the details, I'm glad I took your advice; looks way better!
I saw another person suggest I increase the size of the hand due to how a person's limbs are positioned when running, but I can't find that comment for some reason. I did follow that advice however, and again, it looks better lol.
Thanks for the advice! Your input is really helping me improve.